Answer:

Step-by-step explanation:
Let x = cost of IPod

Check:

OK
Answer:
Factoring answer-
5(5x+5)
simplify answer-
5x+25
Step-by-step explanation:
photomath
Answer:
Approximately 95% of the numbers of days will be between 26 and 58.
Step-by-step explanation:
We are given the following in the question:
Mean, μ = 42
Standard Deviation, σ = 8
We are given that the distribution of average number of days between a bill is a bell shaped distribution that is a normal distribution.
Empirical Formula:
- According to Empirical formula almost all the data lies within three standard deviation of man for a normal distribution.
- Almost 68% of data lies within 1 standard deviation of mean.
- Almost 95% of data lies within two standard deviation of mean.
- Almost 99.7% of data lies within three standard deviation of mean.
Thus, by Empirical formula 95% of data lies within two standard deviation.

Thus, approximately 95% of the numbers of days will be between 26 and 58.
I will not give you the answer but I will show you how to solve this.
55*.6= A
65*.6=B
75*.6=C
85*.6 = D
Do you see the trend? Continue until ten equations are formed and add all of the totals. A+B+D+C...=Total
A = 5/6B
A = 150.60
150.60 = 5/6B
150.60 / (5/6) = B
150.60 * 6/5 = B
903.60/5 = B
180.72 = B
180.72 - 150.60 = 30.12....u save 30.12 when buying from store A